Running Agrimotors On Producer-gas.

Interesting Details of the Operation of the Parker Appliance and an Analysis of its Running Costs. trO countries where the use of trac tors with internal-combustion engines is......

.transporting A 70-ton Steam Launch.

A Difficult Haulage Task for which a Special Trailer was Used. W E are indebted to the Highway Trailer Co., of Edgerton, Wis., U.S.A., for the accompanying illustration......